We all have brands that are our personal favorites. I use Amsoil for the engine and Royal Purple for the automatic transmission. The funny thing is that I really have no proof that Royal Purple is superior to any other brand of ATF. Read on before you start to think that this is a post to slam Royal Purple.
There are hundreds of UOA's for engine oil in the BITOG database that cover virtually every type/style of engine out there. When folks choose Brand "X" oil they can usually say that their decision is based on multiple UOA's and the collective experience of many here at BITOG. In short, they are on fairly solid ground when they say that Brand "X" typically performs better than Brand "Y" for their chosen OCI and application.
Other than shift quality, a few scattered UOA's, and the color of drained fluid, there is very little data that may be used when it comes to selecting ATF. We have virtually no idea what base oils are being used, nor do we know the extent of testing in real world applications. The specs are not as clear as the those used for engine oil. Come to think about it, you don't usually see many commercials on the TV for ATF either.
Questions:
1) What prompted you to select Brand "X" ATF over Brand "Y"?
2) What was taken into consideration when you made your selection?
There are hundreds of UOA's for engine oil in the BITOG database that cover virtually every type/style of engine out there. When folks choose Brand "X" oil they can usually say that their decision is based on multiple UOA's and the collective experience of many here at BITOG. In short, they are on fairly solid ground when they say that Brand "X" typically performs better than Brand "Y" for their chosen OCI and application.
Other than shift quality, a few scattered UOA's, and the color of drained fluid, there is very little data that may be used when it comes to selecting ATF. We have virtually no idea what base oils are being used, nor do we know the extent of testing in real world applications. The specs are not as clear as the those used for engine oil. Come to think about it, you don't usually see many commercials on the TV for ATF either.
Questions:
1) What prompted you to select Brand "X" ATF over Brand "Y"?
2) What was taken into consideration when you made your selection?